161110101040 has 80 divisors (see below), whose sum is σ = 428154382080. Its totient is φ = 55229771520.

The previous prime is 161110101037. The next prime is 161110101049. The reversal of 161110101040 is 40101011161.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (161110101049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4899855 + ... + 4932625.

It is an arithmetic number, because the mean of its divisors is an integer number (5351929776).

Almost surely, 2^161110101040 is an apocalyptic number.

161110101040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161110101040 is an abundant number, since it is smaller than the sum of its proper divisors (267044281040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161110101040 is a wasteful number, since it uses less digits than its factorization.

161110101040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41570 (or 41564 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

The spelling of 161110101040 in words is "one hundred sixty-one billion, one hundred ten million, one hundred one thousand, forty".